I have just finished checking my order from Ray.
The 75 node single LED locks up all red when 12vdc applied. When I decrease voltage any where between 10.5v to around 6v they start to work normal. The SSC I have been using I also used to check the square metal case pixel(I had one bad). The rectangle plastic body I ordered 60 and they all worked.
Yes I opened a disput on AliExpress with Ray.
Wally
wbe12345
